Bibliographic Citation
| Document | For copies of Journal Articles, please contact the Publisher or your local public or university library and refer to the information in the Resource Relation field. For copies of other documents, please see the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or Document Availability. |
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| Title | Absolute rate constants of alkoxyl radical reactions in aqueous solution |
| Creator/Author | Erben-Russ, M. ; Michel, C. ; Bors, W. ; Saran, M. |
| Publication Date | 1987 Apr 23 |
| OSTI Identifier | OSTI ID: 6762772 |
| Other Number(s) | CODEN: JPCHA |
| Resource Type | Journal Article |
| Resource Relation | J. Phys. Chem. ; Vol/Issue: 91:9 |
| Research Org | Gesellscaft fuer Straheln- und Umweltforschung, Neuherberg, West Germany |
| Subject | 400201 -- Chemical & Physicochemical Properties ;400600 -- Radiation Chemistry; ORGANIC OXYGEN COMPOUNDS-- CHEMICAL REACTIONS;ORGANIC OXYGEN COMPOUNDS-- RADIOLYSIS; AQUEOUS SOLUTIONS;CHEMICAL REACTION KINETICS;EXPERIMENTAL DATA;PULSE TECHNIQUES;RADICALS |
| Related Subject | CHEMICAL RADIATION EFFECTS;CHEMICAL REACTIONS;CHEMISTRY;DATA;DECOMPOSITION;DISPERSIONS;INFORMATION;KINETICS;MIXTURES;NUMERICAL DATA;ORGANIC COMPOUNDS;RADIATION CHEMISTRY;RADIATION EFFECTS;REACTION KINETICS;SOLUTIONS |
| Description/Abstract | The pulse radiolysis technique was used to generate the alkoxyl radical derived from tert-butyl hydroperoxide (/sup t/BuOOH) in aqueous solution.^The reactions of this radical with 2,2`-azinobis(3-ethyl-6-benzothiazolinesulfonate) (ABTS) and promethazine were monitored by kinetic spectroscopy.^The unimolecular decay rate constant of the tert-butoxyl radical (/sup t/BuO) was determined to be 1.4 x 10/sup 6/ s/sup -1/.^On the basis of this value, the rate constants for /sup t/BuO attack on quercetin, crocin, crocetin, ascorbate, isoascorbate, trolox c, glutathione, thymidine, adenosine, guanosine, and unsaturated fatty acids were determined.^In addition, the reaction of /sup t/BuO with the polyunsaturated fatty acids (PUFA) was observed by directly monitoring the formation of the fatty acid pentadienyl radicals.^Interestingly, the attack of /sup t/BuO on PUFA was found to be faster by about one order of magnitude as compared to the same reaction in a nonpolar solvent. |
| Country of Publication | United States |
| Language | English |
| Format | Pages: 2362-2365 |
| System Entry Date | 2001 May 13 |
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Last Updated: 02/13/2009